RT3606BEGQW datasheet(3/70 Pages) RICHTEK

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RT3606BE

DS3606BE-04 June 2017

www.richtek.com

is a registered trademark of Richtek Technology Corporation.

Pin No

Pin Name

Pin Function

IMON

CORE rail VR current monitor output. This pin outputs a voltage proportional to the

loading current and a 1

 resistor.

VREF

Fixed 0.6V output reference voltage. This voltage is only used to offset the output

voltage of IMON pin. Between this pin and GND must be placed a exact 0.47

F

decoupling capacitor.

IMONA

AXG rail VR current monitor output. This pin outputs a voltage proportional to the

loading current.

VR_HOT

Thermal monitor output, this pin is active low.

ALERT

SVID alert. (Active low)

VDIO

VR and CPU data transmission interface.

VCLK

Synchronous Clock from the CPU.

VR enable control input.

OFSM

Output voltage offset setting for CORE rail VR.

OFSA/PSYS

Output voltage offset setting for AXG rail VR / System input power monitor. Place the

PSYS resistor as close to the IC as possible.

VCC

Controller power supply. Connect this pin to 5V and place a decoupling capacitor

2.2

F at least. The decoupling capacitor is placed as close VR controller as possible.

IBIAS

Internal bias current setting. Connect a 100k

 resistor from this pin tied to GND to

set the internal current. Don’t connect a bypass pass capacitor from this pin to GND.

RGNDA

Return ground for AXG rail VR. This pin is the negative node of the differential remote

voltage sensing.

VSENA

AXG rail VR voltage sense input. This pin is connected to the terminal of AXG rail VR

output voltage.

COMPA

AXG rail VR compensation. This pin is the error amplifier output pin.

FBA

Negative input of the error amplifier. This pin is for AXG rail VR output voltage

feedback to controller.

35, 34

ISENA[1:2]P Positive current sense inputs of multi-phase AXG rail VR channel 1 and 2.

36, 33

ISENA[1:2]N Negative current sense inputs of multi-phase AXG rail VR channel 1 and 2.

TSENA

Thermal sense input for AXG rail VR.

TONSETA

AXG rail VR on-time setting. An on-time setting resistor is connected from this pin to

input voltage.

DVD

Divided input voltage detection of power stage. Connect this pin to a voltage divider

from input voltage of power stage to detect input voltage.

PS4_Dr

Dr.MOS enable control. Connecting to Dr.MOS PS4 function pin. As received PS4

command, this pin will be floating. If the Dr. MOS needs active low to enter PS4 or

use discrete MOSFET, please reserve a 100k resistor to GND.

42, 41

PWMA[1:2]

PWM output for AXG rail VR.

PS4

External driver enable control. Connecting to driver enable pin. As received PS4

command, this pin will be low state.

45, 44, 46

PWM[1:3]

PWM outputs for CORE rail VR of channel 1, 2 and 3.

PGOOD

VR ready indicator.

TONSET

CORE rail VR on-time setting. An on-time setting resistor is connected from this pin

to input voltage.

(Exposed Pad)

GND

Ground. The exposed pad must be soldered to a large PCB and connected to GND

for maximum power dissipation.

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